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Best advice, play around with non-GUI related things in your free time. Try to grab a good understanding of the language prior to going really indepth with GUIs because there is alot of overhead in...

Ok, there are some fundamental issues here. This code does compile:


import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

public class WordPlay extends JPanel implements...

I would say it cant compile.

if(source == doubleButton){
display.setText(textField.getText(Double));
}

textField.getText(Double) should be attempting to call the getText method of JTextField....